Flexible MMSE DFE using length and LAG adaptation

Gong, Y. and Cowan, C. F. N. (2006) Flexible MMSE DFE using length and LAG adaptation. In: 2005 IEEE/SP 13th workshop on statistical signal processing. IEEE, Bordeaux, pp. 185-190. ISBN 0780394038 doi: 10.1109/SSP.2005.1628588

Abstract/Summary

This paper investigates how to choose the optimum tap-length and decision delay for the decision feedback equalizer (DFE). Although the feedback filter length can be set as the channel memory, there is no closed-form expression for the feedforward filter length and decision delay. In this paper, first we analytically show that the two dimensional search for the optimum feedforward filter length and decision delay can be simplified to a one dimensional search, and then describe a new adaptive DFE where the optimum structural parameters can be self-adapted.